Improvement in apparatus for-feeding blast-furnaces



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lm'provemen t in Apparatus for Feeding Blast-Furnaces.

Patented July 23, 1872.

4.41. moro-umaonn/mcan/x fosao/ws's P1700555) 1 To all whom it mayfcohcem:

. UNITED STATES PATENT Drrron.

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Specification i'ormin g part of Letters Patent No. 129,813, dated July 23, 1872.

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Be it known that I, LEvnN s. doom-nan;

of Waverly, in the county of Humphreys and State of Tennessee, have invented certain new and useful Improvements in Apparatus "for Feeding Blast-Furnaces, of which the-following is-aspecification:

7 Nature and Qbjeot;

The object of my invention is to procure an r I apparatus for feeding blast-furnaces that will withstand the destructive influences of heat in contact therewith for a greater length of time than those'now in use," and to be perfectly adjustable in every part, that the same may beremoved with but little expense of time or labor. The nature of my invention is to produce an air circulation through the ordinary cone used in blast-furnaces, in connection with thecup or the lower section of a divided cone that has a cylinder passing through its center and connected therewith in such a manner that I can practically combine the use of a box with a valvular bottom that will distribute and equalize the stock around the cone by its own gravity. The ordinary cone in use with the cup is raised or lowered by a rod or chain connected 3 to its apex and lever by which it is moved. The upper section of a divided cone is moved the same way. It was formerly designed to. sustain and move the lower section of the divided cone by rods that were to be operated beneath the hopper, so as to "admit the combined use of the equalizing-charger; but in' practice this. was found attended with many difliculties; consequently this labor-saving and important {device had to be dispensed with. My next object is tdlprotect the metal hopper from the damaging effects of heatby the use of an annular air-circulating chamber, as hereinafter described.

GenralDeseription with Reference to theA ccomapparatus through the lines z 2. Fig. 2 represents a vertical sectionof the same through the lines a: w.

a A is a section of the top of a blast-furnace,

upon which is placed B, an annular base, upon which sustains the hopper D, forming, at the same time, an annular chamber around the .1 said hopper, through which a current of air is produced by the pipes E and F, the former of which supplies the air and the latter conducts it on". G is another: annular air-chamber, being located at the bottom of hopper D,

' upon which rests the cone H, which combines I with the said "G, and forms a continuous cone extending down into thefurnace A. The annular chamber G is suspended by-pipes I and J, through 'which also air is supplied to the same, entering first through I and escaping through J. Said pipes are suspended by a cross-head, K, to which is attached apulley or sheave, R, over whicha chain or cable passes from another pulley or winch, S, to the cone H in such a manner that the same may be condisconnected therefrom, at pleasure. L is a car provided with a valvular bottom, T, sustained ,by the chain W and operated by shaft V. M M is a rail-track situated at the top of the hopper D, leading to the stock-yard, the object of which is to deliver coal-or other material to the said hopper directly over the cone H, by which means it will be evenly distributed and cillating upon the fulcrum 0, one end of which is connected with the cross-head K, and at the other end with the crank P by connecting-rod Q, or other suitable device for oscillating the same.

Operation.

Suppose the chainW to be disconnected, as shown in Fig. .2 of my drawing, and the car L to be filled with coal or other material, and moved on track M, directly over the cone H. By the'use of valve T at the bottom of L the coal is discharged into hopper D, equalizing itself around the said cone H by its own gravity. Now, if it is desiredthat this'charge of coal shall be delivered to. the in-wall ofLthe fun nace A, the annular air -chamber or valve G is lowered by means of pipes I and J, to which they are connected at the bottom, and at the top to cross-head K, which connects with the beam N, which is oscillated by crank P, being connected therewith by rod 0, as shown. The lowering of said G produces an annular openwhich is placed the annular angle-piece G,

nected to raise or lower the said cone H, or

equalized around said cone. N is a beam osing' between it and the bottom of hopper D, through which the charge of coal passes, directed by the cone H, which remains in connection with said G during the operation; though, had. it been desired to deliver the charge to the center of said A after having been equalized around the cone H, the car L would have been moved from over cone H and the chain W connected with the eye in said cone, by means of which the said cone H would have been raised While the annular chamber or valve G remained stationary, through the center of which the charge would then pass, dirccted by the hopper D. It may behere stated that the annular angle-piece O, the hopper D, and cone H may all be raised by, one operation to any desired height by the rods I and J, the annular chamber or valve G, and connections therewith. It may also be stated that the said angle-piece 0 may rest on the top of furnace A in such a manner as to avoid the use of ring B, and many devices may be employed instead of the beam N for the purposes for which it is designed; therefore,

What I claim as my invention, and desire to secure by Letters Patent of the United States, is

'tion with pipes E and F, for the purpose above 1. The combined air-chamber and. valve'G, as and for the purpose above set forth.

2. The combination of .pipes I and J with the chamber G and cross-head K, substantially as and for the purpose above set forth.

3. The annular angle-piece Q for the com; bined purpose of supporting and forming-an annular air-circulating chamber around hop per D, substantially as described, in connec,

set forth. I

4. The combination of the pipes I and J, the cross-head K, sheaves R and S, the beam N, and chain W, for the purpose above set forth] 5. I finally claim the combination of the com? bined air-chamber and valve G with pipes and J, cross-head K, beam N, or its equivalent an gle-piece Gr, hopper D, pipes E andF, sheaves R and S, chain W, car L, valvular bottom '1, chain U, shaft V, and track M, all as arranged, for the purposes set forth in the above specifi; cation.

LEVEN S. GOODRICH.

Witnesses:

G. E. HILLMAN, J. G. WINN. 

